2540667 has 16 divisors (see below), whose sum is σ = 3704832. Its totient is φ = 1541760.

The previous prime is 2540663. The next prime is 2540677. The reversal of 2540667 is 7660452.

It is not a de Polignac number, because 2540667 - 2² = 2540663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2540663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 778 + ... + 2384.

It is an arithmetic number, because the mean of its divisors is an integer number (231552).

2^2540667 is an apocalyptic number.

2540667 is a deficient number, since it is larger than the sum of its proper divisors (1164165).

2540667 is a wasteful number, since it uses less digits than its factorization.

2540667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 2540667 is about 1593.9469878261. The cubic root of 2540667 is about 136.4528409861.

The spelling of 2540667 in words is "two million, five hundred forty thousand, six hundred sixty-seven".